Alegria Belle Mary Jane Flat - Women'sPolyurethane outsoles engineered to provide a natural rocker walking motion. Structured, flat, and stable outsoles that also promote perfect posture thus reducing stress on muscles and joints. Removable (and replaceable!) footbeds (also called insoles) constructed of cork, memory foam and latex which creates a perfect fit by forming to the natural contours of your foot. (Footbeds are also removable for your custom orthotics!) Superior arch support.